Children or adolescents with migraine and both parents are informed in detail about the study.Probands are advised to fill in a special childrens´ diary for migraine daily. After a 4 week-run-in period they start to take the dietary supplement (powder to be dissolved in water)plus a capsule with omega-3-fatty acids from fish oil for 12 weeks daily. Afterwards there is a follow-up without supplement treatment for another 12 weeks.76 participants will be included in the trial for statistical evaluation.